Invention Grant
- Patent Title: Metastability glitch detection
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Application No.: US14473922Application Date: 2014-08-29
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Publication No.: US09673819B2Publication Date: 2017-06-06
- Inventor: Rajeev Sehgal , Srinivas Mandavilli , Pradish Mathews , Ajit Singh , Henry Potts
- Applicant: Mentor Graphics Corporation
- Applicant Address: US OR Wilsonville
- Assignee: Mentor Graphics Corporation
- Current Assignee: Mentor Graphics Corporation
- Current Assignee Address: US OR Wilsonville
- Agency: Mentor Graphics Corporation
- Priority: IN439/CHE/2014 20140130
- Main IPC: H03K19/0175
- IPC: H03K19/0175 ; H03K9/08 ; H03K3/02 ; H03K19/096 ; H03K3/013 ; G01R19/165 ; G06F11/14 ; H03K3/037

Abstract:
This application discloses a system to detect meta-stable glitches in a signal, such as an output of latch or other storage element. The system can include a sampling circuit configured to sample an output of a storage element. The system can include a mono-shot circuit configured to monitor the output of the storage element and generate a pulse when the monitored output of the storage element differs from the sampled output. The system can include a drive circuit configured to generate a glitch signal based, at least in part, on the sampled output, and to output the glitch signal in response to the pulse from the mono-shot circuit. The system can include an error detection circuit configured to receive the sampled output from the sampling circuit and the glitch signal from the drive circuit, and to generate an error signal when the sampled output differs from the glitch signal.
Public/Granted literature
- US20170141764A9 METASTABILITY GLITCH DETECTION Public/Granted day:2017-05-18
Information query
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